NumberResearch Membership · Data 2026-04

Recent prefix assignments

5 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 2026-04

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Which carriers received which NPA-NXX prefixes, and where. Assignments are initial assignments from NANPA records — because of number portability, the current serving carrier of individual numbers may differ. For finer-grained activity, see the thousands-block view above.

Most active assignees, last 30 days
T-MOBILE USA, INC. 5
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXAssigneeOCNRate centerState
2012-10-02 909-344 T-MOBILE USA, INC. 6529 CLAREMONT CA
2012-10-02 972-589 T-MOBILE USA, INC. 6529 GRANDPRARI TX
2012-10-02 972-802 T-MOBILE USA, INC. 6529 GRANDPRARI TX
2012-10-01 219-321 T-MOBILE USA, INC. 6529 GARY IN
2012-09-28 480-374 T-MOBILE USA, INC. 6529 PHOENIX AZ
2012-09-28 872-209 T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2012-09-28 971-302 T-MOBILE USA, INC. 6529 PORTLAND OR
2012-09-24 661-429 T-MOBILE USA, INC. 6529 LANCASTER CA
2012-09-17 520-460 T-MOBILE USA, INC. 6529 TUCSON AZ
2012-09-14 530-379 T-MOBILE USA, INC. 6529 WOODLAND CA
2012-09-14 817-941 T-MOBILE USA, INC. 6529 ARLINGTON TX
2012-09-12 602-552 T-MOBILE USA, INC. 6529 PHOENIX AZ
2012-09-11 312-619 T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2012-09-11 602-872 T-MOBILE USA, INC. 6529 PHOENIX AZ
2012-09-04 415-429 T-MOBILE USA, INC. 6529 SNFC CNTRL CA
2012-08-28 951-355 T-MOBILE USA, INC. 6529 PERRIS CA
2012-08-15 435-339 T-MOBILE USA, INC. 6529 BRIGHAM CY UT
2012-08-10 224-256 T-MOBILE USA, INC. 6529 ALGONQUIN IL
2012-08-03 949-245 T-MOBILE USA, INC. 6529 CAPITRNVLY CA
2012-07-27 219-276 T-MOBILE USA, INC. 6529 E CHICAGO IN
2012-07-16 469-316 T-MOBILE USA, INC. 6529 GRANDPRARI TX
2012-07-09 602-638 T-MOBILE USA, INC. 6529 PHOENIX AZ
2012-06-29 626-328 T-MOBILE USA, INC. 6529 ALHAMBRA CA
2012-06-19 405-667 T-MOBILE USA, INC. 6529 OKLA CITY OK
2012-06-11 216-239 T-MOBILE USA, INC. 6529 CLEVELAND OH
2012-06-08 234-214 T-MOBILE USA, INC. 6529 CANTON OH
2012-05-31 602-715 T-MOBILE USA, INC. 6529 PHOENIX AZ
2012-05-17 520-332 T-MOBILE USA, INC. 6529 TUCSON AZ
2012-05-15 219-240 T-MOBILE USA, INC. 6529 GARY IN
2012-05-15 385-209 T-MOBILE USA, INC. 6529 KAYSVILLE UT
2012-05-15 405-569 T-MOBILE USA, INC. 6529 OKLA CITY OK
2012-05-15 918-780 T-MOBILE USA, INC. 6529 TULSA OK
2012-05-15 918-901 T-MOBILE USA, INC. 6529 TULSA OK
2012-05-14 405-859 T-MOBILE USA, INC. 6529 OKLA CITY OK
2012-05-07 602-832 T-MOBILE USA, INC. 6529 PHOENIX AZ
2012-05-03 509-424 T-MOBILE USA, INC. 6529 YAKIMA WA
2012-05-02 224-308 T-MOBILE USA, INC. 6529 ROUND LAKE IL
2012-04-30 209-272 T-MOBILE USA, INC. 6529 MODESTO CA
2012-04-28 714-853 T-MOBILE USA, INC. 6529 FULLERTON CA
2012-04-24 520-365 T-MOBILE USA, INC. 6529 TUCSON AZ
2012-04-23 708-314 T-MOBILE USA, INC. 6529 CHICAGOHTS IL
2012-04-10 331-250 T-MOBILE USA, INC. 6529 AURORA IL
2012-04-06 602-303 T-MOBILE USA, INC. 6529 PHOENIX AZ
2012-03-29 209-269 T-MOBILE USA, INC. 6529 LODI CA
2012-03-28 385-206 T-MOBILE USA, INC. 6529 OGDEN UT
2012-03-26 918-206 T-MOBILE USA, INC. 6529 TULSA OK
2012-03-19 937-607 T-MOBILE USA, INC. 6529 DAYTON OH
2012-03-14 314-441 T-MOBILE USA, INC. 6529 LADUE MO
2012-03-13 405-468 T-MOBILE USA, INC. 6529 OKLA CITY OK
2012-03-13 918-904 T-MOBILE USA, INC. 6529 TULSA OK

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 2026-04 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.